公开(公告)号：US09910113B2

公开(公告)日：2018-03-06

申请号：US13923308

申请日：2013-06-20

申请人： Markus Vester

发明人： Markus Vester

IPC分类号： G01V3/00 ,  G01R33/36

CPC分类号： G01R33/3692 ,  G01R33/3621

摘要： A local coil for a magnetic resonance imaging system for acquisition of magnetic resonance signals includes a receiving mechanism for wireless transmission of operating energy of the local coil and/or a signal of the magnetic resonance imaging system. The receiving mechanism is configured to take the operating energy and/or the signal from a supply field. A magnetic resonance imaging system is also provided. The magnetic resonance imaging system includes a transmitting mechanism for wireless transmission of operating energy of a local coil and/or a signal of the magnetic resonance imaging system. The transmitting mechanism has a transmission signal generator that is connected to a field source and a field sink. The transmitting mechanism is constructed such that, in operation, the operating energy and/or the signal is transmitted by a supply field that is present as an electrical alternating voltage field between the field source and the field sink.

公开(公告)号：US20180024206A1

公开(公告)日：2018-01-25

申请号：US15659233

申请日：2017-07-25

申请人： Björn Heismann ,  Markus Vester

发明人： Björn Heismann ,  Markus Vester

IPC分类号： G01R33/28 ,  G01R33/30 ,  G01R33/36

摘要： A magnetic resonance tomography unit includes a control unit, a transmitting unit having one or a plurality of transmitting antennae, a selector, and a high-frequency unit having a signal output in signal connection with the transmitting unit. The transmitting unit is configured to irradiate high-frequency energy using the selector and the one or plurality of transmitting antennae optionally into only a first region of a plurality of different regions in a patient.

公开(公告)号：US09829549B2

公开(公告)日：2017-11-28

申请号：US13890128

申请日：2013-05-08

申请人： Ludwig Eberler ,  Jürgen Nistler ,  Markus Vester

发明人： Ludwig Eberler ,  Jürgen Nistler ,  Markus Vester

IPC分类号： G01R33/34 ,  G01R33/422 ,  G01R33/36 ,  G01R33/48 ,  G01R33/563

CPC分类号： G01R33/34092 ,  G01R33/34046 ,  G01R33/34076 ,  G01R33/3628 ,  G01R33/422 ,  G01R33/4806 ,  G01R33/56341

摘要： A whole-body coil for a magnetic resonance tomography device includes one or more compensation capacitors between a high-frequency antenna and an RF shield. The one or more compensation capacitors each have variable capacitance caused by a variation in a distance of the RF shield to the high-frequency antenna.

公开(公告)号：US09733321B2

公开(公告)日：2017-08-15

申请号：US13854928

申请日：2013-04-01

申请人： Sebastian Martius ,  Markus Vester

发明人： Sebastian Martius ,  Markus Vester

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/34 ,  G01R33/34015 ,  G01R33/3415 ,  G01R33/3692

摘要： A magnetic resonance tomography apparatus includes a receiving device having a number of magnetic resonance receive antennas for receiving a magnetic resonance signal in response to a radio frequency signal transmitted at a magnetic resonance frequency. A respective magnetic resonance receive antenna is connected to a parametric mixer. A receive circuit formed hereby is provided inside the cryostat and is coupled via a contactless communication interface to an evaluation circuit provided outside the cryostat. The evaluation circuit includes a local oscillator device for generating an auxiliary signal at an auxiliary frequency. The auxiliary signal is transmitted via the contactless communication interface to the receive circuit. The receive circuit is configured such that a mixed signal having a mixed frequency is generated via the parametric mixer from the auxiliary signal and the magnetic resonance signal and transmitted via the contactless communication interface to the evaluation circuit.

公开(公告)号：US20160216346A1

公开(公告)日：2016-07-28

申请号：US14997071

申请日：2016-01-15

申请人： Robert Rehner ,  Markus Vester

发明人： Robert Rehner ,  Markus Vester

IPC分类号： G01R33/36 ,  G01R33/46

CPC分类号： G01R33/24 ,  G01R33/34053 ,  G01R33/422 ,  G01R33/56563 ,  G01R33/58

摘要： The embodiments relate to a method and field probes for measuring a static and/or in particular a dynamic magnetic field in an imaging magnetic resonance tomography system, wherein the field probe includes a body surrounded by a coil. The coil includes a middle or center winding section and at least one or two outer winding sections.

摘要翻译： 这些实施例涉及用于测量成像磁共振断层摄影系统中的静态和/或特别是动态磁场的方法和场探头，其中场探头包括被线圈包围的身体。 线圈包括中间绕组部分和中心绕组部分以及至少一个或两个外部绕组部分。

公开(公告)号：US09297868B2

公开(公告)日：2016-03-29

申请号：US13277006

申请日：2011-10-19

申请人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

发明人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/3607 ,  G01R33/3415 ,  G01R33/3621

摘要： The present embodiments include an antenna circuit that is adapted to supply and/or read out a plurality of antenna elements of an antenna assembly of a magnetic resonance imaging system. The antenna elements are decoupled by phase shifter elements and supplied with signals by the phase shifter elements. The antenna circuit may also be used to detect signals that are received by the antenna elements.

摘要翻译： 本实施例包括适于提供和/或读出磁共振成像系统的天线组件的多个天线元件的天线电路。 天线元件由移相器元件解耦并由移相器元件提供信号。 天线电路还可以用于检测由天线元件接收的信号。

公开(公告)号：US20150323623A1

公开(公告)日：2015-11-12

申请号：US14705576

申请日：2015-05-06

申请人： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

发明人： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC分类号： G01R33/36 ,  G01R33/385 ,  G01R33/561 ,  G01R33/34

CPC分类号： G01R33/365 ,  G01R33/34076 ,  G01R33/34092 ,  G01R33/3415 ,  G01R33/3657 ,  G01R33/385 ,  G01R33/5612

摘要： A magnetic resonance imaging (MRI) system includes a plurality of transmitters to generate a parallel transmission radio frequency (RF) pulse, an array of coils coupled to the plurality of transmitters to apply the parallel transmission RF pulse to a subject, and a decoupling system connected to the plurality of transmitters and the array of coils. The decoupling system includes a plurality of hybrid couplers, each hybrid coupler of the plurality of hybrid couplers being coupled to a respective pair of the plurality of transmitters and to a respective pair of the array of coils. The plurality of hybrid couplers are configured to diagonalize an impedance matrix of the plurality of coils.

摘要翻译： 磁共振成像（MRI）系统包括多个发射器以产生并行传输射频（RF）脉冲，耦合到多个发射器的线圈阵列以将并行发射RF脉冲施加到对象，以及解耦系统 连接到多个发射器和线圈阵列。 解耦系统包括多个混合耦合器，多个混合耦合器的每个混合耦合器耦合到相应的多个发射器对以及相应的一对线圈阵列。 多个混合耦合器被配置为使多个线圈的阻抗矩阵对角化。

公开(公告)号：US20150241528A1

公开(公告)日：2015-08-27

申请号：US14632154

申请日：2015-02-26

申请人： Andreas Fackelmeier ,  Sebastian Martius ,  Robert Rehner ,  Christopher Stumpf ,  Markus Vester

发明人： Andreas Fackelmeier ,  Sebastian Martius ,  Robert Rehner ,  Christopher Stumpf ,  Markus Vester

IPC分类号： G01R33/36 ,  G01R33/48 ,  G01R33/34

CPC分类号： G01R33/3657 ,  G01R33/34023

摘要： An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor.

摘要翻译： 一种装置包括超导分裂环谐振器，低温恒温器和铜线圈。 谐振器布置在低温恒温器中，并且包括由超导材料制成并且包括开口和锥形的至少一个环形导体。 铜线圈可用于传输MRI激励信号。 该信号导致导体中导致的电流导致超导性的破坏。 导体失谐，因此不再产生干扰效应。 有可能以有目的的方式将超导性破坏的效果用于失谐。 传输完成后，导体返回超导状态，作为MRI测量信号的超导接收天线。 铜线圈感应耦合到导体并且被配置为读出在导体中感应的信号。

公开(公告)号：US20150061681A1

公开(公告)日：2015-03-05

申请号：US14468937

申请日：2014-08-26

申请人： Wolfgang Renz ,  Markus Vester

发明人： Wolfgang Renz ,  Markus Vester

IPC分类号： G01R33/36

CPC分类号： G01R33/36 ,  G01R33/288 ,  G01R33/3607 ,  G01R33/3635 ,  G01R33/3678

摘要： The embodiments relate to a method, a MRI device, and a circuit for an imaging magnetic resonance imaging device that includes at least one transmission coil for transmitting a magnetic field, where the circuit includes a hybrid coupler and at least one phase shifter that may be or are arranged in the transmission path between an amplifier and at least one transmission coil of the magnetic resonance imaging device.

摘要翻译： 实施例涉及一种用于成像磁共振成像装置的方法，MRI装置和电路，其包括用于传输磁场的至少一个传输线圈，其中电路包括混合耦合器和至少一个移相器 或者布置在放大器与磁共振成像装置的至少一个传输线圈之间的传输路径中。

公开(公告)号：US20150048823A1

公开(公告)日：2015-02-19

申请号：US14340990

申请日：2014-07-25

申请人： Andreas Fackelmeier ,  Sebastian Martius ,  Markus Vester

发明人： Andreas Fackelmeier ,  Sebastian Martius ,  Markus Vester

IPC分类号： G01R33/34

CPC分类号： G01R33/34 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3642 ,  G01R33/3685

摘要： An antenna apparatus is described, for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device. The antenna apparatus includes a resonator with a plurality of electrically conductive conductor loops, which are each interrupted by a number of electrically insulating slits. The antenna apparatus further includes a carrier substrate for holding the conductor loops and a cable connection apparatus having a number of shielding apparatuses. At least one of the number of shielding apparatuses provides a conductive coupling to a virtual ground of at least one conductor loop. Moreover, an antenna array apparatus, a magnetic resonance system and a method for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device are described.

摘要翻译： 描述了一种用于在使用磁共振装置的磁共振成像期间从检查对象接收磁共振信号的天线装置。 天线装置包括具有多个导电导体环的谐振器，每个导电导体环被多个电绝缘狭缝间断。 天线装置还包括用于保持导体环的载体基板和具有多个屏蔽装置的电缆连接装置。 多个屏蔽装置中的至少一个提供与至少一个导体环路的虚拟接地的导电耦合。 此外，描述了使用磁共振装置的磁共振成像期间的天线阵列装置，磁共振系统和从检查对象接收磁共振信号的方法。